<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>cloneRegExp</title>
</head>

<body>
    <div>打开浏览器控制台查看结果</div>
    <script>
        const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
        const regExp = /lorem ipsum/gi;
        const regExp2 = cloneRegExp(regExp);
        console.log(regExp, regExp2, regExp === regExp2);
    </script>
</body>

</html>